Improvement of the electrical energy quality using a Shunt Active Filter supplied by a photovoltaic generator

For several years, during the exploitation of the conventional electrical network, the problem of the quality of the electrical energy provided to the users has arisen. This is due to the increasing presence on the network of nonlinear loads; they constitute a harmonic pollution source of to the network, which generate many disturbances, and disturb the optimal operation of electrical equipments. In this work, we propose a solution to eliminate the current harmonics introduced by the nonlinear loads, thanks to a Shunt Active Filter supplied by a photovoltaic generator, for the compensation at the same time of the harmonics currents and the reactive power. The algorithm of control and regulation of the three-phase inverter operating as a harmonics compensator uses the PWM control strategy. We carry out initially the identification of the currents of references, which make it possible to control the currents injected into the network, thanks to a regulator which determine the reference voltage of the PWM control inverter. Lastly, the numerical simulation of the photovoltaic compensation system, that we approached in this work allowed us to reach very good performances of compensation, from the point of view of the reduction of the distortion harmonic rate of and the improvement of the power-factor.